DocumentCode :
1851420
Title :
Progressive multigrid V-cycle phase unwrapping for MRI phase images
Author :
Dewi, D.E.O. ; Suksmono, Andriyan B. ; Mengko, Tali Latifah U
Author_Institution :
Imaging & Image Process. Res. Group, Inst. Teknologi Bandung, Indonesia
fYear :
2005
fDate :
23-25 June 2005
Firstpage :
368
Lastpage :
371
Abstract :
We propose a progressive method which improves the conventional multigrid V-cycle phase unwrapping (PU) scheme. The method is aimed to accommodate the need of early visualization in solving wrapping problem in phase image. In essence, this technique formulates the wrapped phase image in a partial differential equation (PDE) and solves it by performing a rough global scale solution in the first grid of multigrid structure and constructing the subsequent levels of detail utilizing the gradients of residual error in coarse and fine grids. The intermediate solution is then superposed to the previous solutions and displayed to the user gradually to get an improved solution. In this paper, we look into the feasibility of utilizing this approach to magnetic resonance imaging (MRI) application. The proposed system is evaluated on simulated as well as actual MRI phase images and shows promising progressive improvement in estimating the unwrapped phase image over the conventional one.
Keywords :
biomedical MRI; medical image processing; partial differential equations; MRI phase images; Multigrid structure; magnetic resonance imaging; multigrid V-cycle phase unwrapping; partial differential equation; phase image wrapping; residual error; Demodulation; Image processing; Laboratories; Magnetic field measurement; Magnetic resonance imaging; Microwave imaging; Partial differential equations; Phase estimation; Visualization; Wrapping;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Enterprise networking and Computing in Healthcare Industry, 2005. HEALTHCOM 2005. Proceedings of 7th International Workshop on
Print_ISBN :
0-7803-8940-9
Type :
conf
DOI :
10.1109/HEALTH.2005.1500483
Filename :
1500483
Link To Document :
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